Mine seemed to have a problem in that most of the time it put out just one repeat no matter how I had the repeat knob set. Opened it up and it appears that the potentiometers were not soldered on properly, as is obvious from the pictures. The other pots did not malfunction like the repeat pot, save ...

drewl wrote:What does the original ad for the Supafuzz say in the Marshall Amp book, a "full 19 seconds of sustain" or something like that?

How'd they measure that I wonder.

First version had a modified Tone Bender mkI circuit.

http://www.bigmuffpage.com/The_Tonebend ... ine_2.html

Corrected power amp section, C8 was labeled as C6 on first version.

If anyone is interested, here's the link to the Pterodriver schematic. http://www.yerasov.ru/sites/default/files/schemas/schematic_pd-5.pdf It's still on their site, but the actual Pterodriver has been discontinued and you can't access its page from the regular menu. http://img.audiofanzine.com/imag...

Also want to point out that in the 8th post I wrote "cathode resistors" but meant "plate resistors".

Changed the plate resistor with low resistance to one that has 100.8K ohms and now I'm getting 290V on the plate, which is what I wanted so I can use any ECC83/12AX7 without frying it. I'm going to change some of the pots, I noticed they are stamped "MOUSER". It's a real pain to work on th...

I don't think it's a Sears/Silvertone because the graphics and switches are different. It's likely a Montgomery Ward amp made by Valco. Sometimes they are labeled "Airline", as this was MW's line, as Silvertone was for Sears. https://reverb.com/uk/item/5134473-vintage-1960-s-valco-montgome...

Well that socket has 6 tabs which tells me it's a stereo switching unit and the middle terminal is used as a mount for junction of Speaker Hot and R27. Now if it was wired up wrong side then there would be No signal. It would not be the first time a factory product went out the door with a wiring f...

I am not getting any signal out of the line output. I tried a 4-track cassette, a computer, and no signal. I checked the cable each time by plugging my guitar straight into it, and there was a signal that way. I checked out the resistors earlier and resoldered them. No signal and I have never gotte...

Another thing I wanted to point out about this amp is the cathode resistors. One was fried as in the above pic, and the other measures about 90K, which bumps the plate voltage to over 300V. Right now I have a long plate valve in there, but I'll put in another of closer value so I can put whatever v...

I am not getting any signal out of the line output. I tried a 4-track cassette, a computer, and no signal. I checked the cable each time by plugging my guitar straight into it, and there was a signal that way. I checked out the resistors earlier and resoldered them. No signal and I have never gotten...

Line output. I tried to record from this years ago, without success. I may try again.

Detail around the power valves. Note that the 15K ohm resistor is stock, not Russian and not on the schematic (I bought this amp new).

Here is the power amp section. Note that the black filter caps are not original. The amp came with Illinois Capacitors there (really).

Here is the preamp section. Note that R52 is really a capacitor and it has a capacitor symbol on the schematic as well.

(C)R52 and C5 were originally blue Russian caps, and R4 was originally a reddish brown Russian resistor, They are not stock.

There are two resistors in the heater circuit, they are not on either schematic.

My particular amp (stock) differs from the schematic in several ways. When there is nothing plugged into the high gain input, the screen of gets connected straight to earth without going through R10. There is another connection in green (on the enclosed schematic) which differs, as well as two extra...

I have a slightly better scan of the schematic than the one usually found on the net. If you want an even more detailed scan, please send me a message.

Rubbing alcohol is working somewhat, would using lighter fluid be good or bad?

I tried to check out the demos of the BLT on Youtube, they're not that good to be able to tell if it sounds exactly the same. Could just buy a BLT, but the only place that I've seen them for sale has them at 43 Euros, which is way too much. Maybe if I find a cheap used one. There's also the Corned B...